The FBI saw enough merit in a reputed Mafia captain’s tip to once again break out the digging equipment to search for the remains of former Teamsters union leader Jimmy Hoffa, last seen alive before a lunch meeting with two mobsters nearly 40 years ago.

Federal agents revived the hunt for the remains of Jimmy Hoffa on Monday, bringing excavation equipment to a field in suburban Detroit where a reputed Mafia captain says the Teamsters boss’ body was buried.